<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="vue.js"></script>
</head>
<body>
<div id="box"><span>{{a}}</span></div>
<div><img src="" alt=""></div>
<div><img src="" alt=""></div>
<div><img src="" alt=""></div>
<div><img src="" alt=""></div>
<div><img src="" alt=""></div>

<script>
    var data = {
        'a':1,
    }
    var a =  1;
    alert(1);
    var vm = new Vue({
        el:'#box',
        data:data,
    })
</script>
</body>
</html>